Kostecka, Joanna. “House Martin Delichon Urbicum Case Study As a Reason to Consider the Need of Retardation of Processing of Natural Re-Sources and Protection of Ecosystems’ Services”. Problemy Ekorozwoju 6, no. 1 (January 3, 2011): 139–144. Accessed December 22, 2024. https://ph.pollub.pl/index.php/preko/article/view/4808.